Finding the Fourth Proportional to 816,516.69, 1,126,729.18 and 453,918.47
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Solution
The fourth proportional to 816,516.69, 1,126,729.18 and 453,918.47 is: 626,371.99
Step by Step Solution
- Step 1: Write the proportion equation
816,516.69 : 1,126,729.18 = 453,918.47 : x - Step 2: Convert to fraction form
816,516.69/1,126,729.18 = 453,918.47/x - Step 3: Cross multiply
816,516.69x = 1,126,729.18 × 453,918.47 - Step 4: Simplify right side
816,516.69x = 511,443,180,423.71 - Step 5: Solve for x
x = 511,443,180,423.71/816,516.69 - Step 6: Final answer
x = 626,371.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.